Did screen cleaner mess up my screen?

So i used screen cleaner on the screen of my MB, and i guess some if it got under the screen, and now there's a big, weird, light spot on the downside in the center.

Here's a picture:

it already changed a bit. The spot got a different shape (bit smaller actually), but now there are all these lines there, and it looks like the color is darker or gone completely under them. Is there anything i can do? Did i mess up my screen? Also i was told to mention that i don't have applecare.

There's nothing you can do in my experience. Water spills to the LCD can dry out and can almost completely disappear over a period of time. Coffee, juice tea etc... spills to the LCD will likely remain forever to some degree.
The clearer the liquid the better your chance of a recovery.
Good luck!

Cleaning Your MacBook Display
Follow these general rules when cleaning the screen.
Shut down your MacBook, detach the power adapter, and remove the battery.Dampen a clean, soft, lint-free cloth or paper with water only and wipe the screen. Do not spray liquid directly on the screen.

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